QPID-5967: Intruder node detection must be mandatory and should validate all necessary arguments

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1616186 13f79535-47bb-0310-9956-ffa450edef68
QPID-5965 : Fix test mock message to include stored message

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1616209 13f79535-47bb-0310-9956-ffa450edef68